I n s t a l l a t i o n & P r o g r a m m i n g M a n u a l
30
DISA
Dial
at auto answer.
The system can be set to answer incoming calls with a voice message, prompting the user to dial a
specific extension, or dial ‘00’ to be diverted to an emergency external number. The external number
is shared with the External call diversion feature, on page 40. Depending on the digits entered, the
caller is put through to the correct extension directly, or to the emergency number. If no digits are
dialled the call will revert to a general call. It is possible to program a PIN number with the DISA
facility so that the extensions or external number may only be dialled directly if a PIN is also entered
with the DISA code. Callers into the system will be treated according to the flowchart of Figure 3-5.
Note also that the access code is shared with the incoming call control feature above.
Figure 3-5 DISA Operation Flowchart
Yes
No
No
Yes
No
Yes
No
Yes
Yes
No
Incoming call
Auto-answered ?
Auto-answer not enabled
Dial 4 for DISA
Access code
required?
Enter DISA access
code
Access code
correct?
Call accepted,
ext. rings with incoming
call
Incoming Call
control enabled?
Call
disconnected
Call goes to a general
call, all extensions ring
Enter a valid
extension
number
Entered ‘00’ &
external no.
programmed?
Call diverted to
external number
Yes
